Fish lure



Oct. 27, 1925. 1,558,470

P. D. GIBSON FISH LURE FiledLMay 29, 1925 Invenj n r 692 7% my flw z Patented Oct. 27, 1925.

UNITED STATES PORTER D. GIBSON, OF SIOUX CITY, IOWA.

FISH LURE.

Application filed May 29, 1925.

To all whom it may conccm.

Be it known that I,Ponr1an D. GmsoN, a citizen of the United States, and a resident of Sioux City, in the county of lVoodbury and State of Iowa, have invented certain new and useful Improvements in a Fish Lure, of which the following is a specification.

My invention relates to a fish lure of what is commonly known as the plug type, and it is my object to provide such a lure which is of very simple, durable and inexpensive construction.

My invention is directed to a plug which is of sufiicient buoyancy as to travel at the surface of the water when being reeled, and resides, in the peculiar formation of the upper portion of the plug against which the surface of the water will act as the plug moves forwardly in the water, in such amanner as to give the plug a decided osciL lating movement which is very rapid.

lVith these and other objects in view, my invention consists in the construction, arrangement and combination of the various parts of my device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

Fig. 1 is a plan view of the plug, the center of oscillation being illustrated by crossed center lines, and the oscillating movement of the plug being indicated in dotted lines.

Fig. 2 is a perspective view of the plug.

Fig. 3 is a side elevation of the plug in the position assumed when being reeled in the water, the action of the water currents against the plug being indicated by arrows.

The plug has the usual elements, .including a body portion, A a pair of hooks, B and C, secured by means of screw eyes, 10, to the under surface, and rear end of the plug, respectively, and a line tie, D, to which may be secured a line, E.

The body, A, has a plane under surface, 10*, and parallel flat sides, 11, which are perpendicular to the under surface. The sides, 11, extended forward, partly define the head, 12, which has an abrupt nose or forward face, 13, inclined a little to the rear of the perpendicular to the lower face, 10. The plane or face, 13, is perpendicular to the sides, 11, the upper surface, 14, of the head being parallel to the lower surface, 10, and therefore perpendicular to the sides,

Serial No. 33,645.

11. The surfaces, 13 and 14, are connected by an intermediate curved surface, 15, which is formed substantially on the surface of a cylinder, having its axis perpendicular to the sides, 11. The tie line, D, is located in this curved surface, 15.

The upper or back surface of the body is raised, as at 16, above the surface, 14, and joined thereto by means of a shoulder, 17

the surface of which forms a continuous curve blending with the surfaces, 14; and 16. Rearwardly of the shoulder 17 the back is curved downwardly toward the lower surface, 10, in a broad curve. The generatrix of the curved surface, 18, is a line perpendicular to the sides, 11, whereby all cross section of the body will be rectangles.

The rear end of the body is cut off abruptly, as at 19, in order to allow insertion of thescrew eye, 10, of the rear hook, C.

The weight of the plug is concentrated forwardly of the center thereof, and rearwa-rdly of the shoulder, 17, at approximately the point indicated at 20, which tends to cause it to lean somewhat forwardly in the water, as shown inFig. 3. This tendency is accentuated, as will be more fully brought out hereinafter.

As the plug is pulled through the water, it will assume the position shown in Fig. 3, the water level being as indicated at 21, and the curved surface, 15, of the head will throw up a stream of water, as indicated. by the arrow, 22, which will flow rearwardly against the shoulder, 17, as indicated by the arrow, 28. The shoulder, 17 throws the current of water upwardly in the course indicated by the arrows, 24, the water tending to separate from the curved back and to thereby create a partial vacuum over the rear portion of the body. As a result of this partial vacuum the rear end of the body is further elevated, and in addition, the resistance of the water to the sideward swingingthereof is substantially decreased.

The plug has been designed so that the resistance to swinging motion will be greatest near the center of gravity, 20, the side faces there being the broadest.

The rear portion of the tail having a much less lateral surface than the central part of the body, the resistance of the water to the lateral swing is thereby further decreased.

The surface tension of the Water tends to increase the resistance of the water to the movement of the body at the surface, and for this reason the spreading of the surface film of water away from the rear parts of the body by the action of the shoulder, 1'7, decreases the resistance-to the swinging of the tail to a minimum, and increases the resistance just forwardly of the center of gravity, 20.

The force of the water acting against the nose, 13, and against the shoulder, .17, causes a tendency in the plugtoswing sideways so as lessen the resistance of these portions, and the result of this tendency is an oscillating or wiggling movement about a vertical axis located just rearwardly of the shoulder,

17, as defined by the crossed center lines,

and 26 in Fig. 1.

I am aware that other plugs have been devised in which a blunt or abrupt forward face has been used to give an oscillating motion to a plug, and do not attempt to claim broadly such a structure.

I find that with the use of the features embodied in my invent-ion and herein described the wiggling action is very pronounced, and is accentuated by concentratingthe resistance near the center of the plug, as explained.

The curved nose, .15, serves to part the water and directa portion thereof in the form of a current flowing upwardly against the shoulder, 17. Inasmuch as the major portion of the headis submergechthe curved surface, 15, will not throw the water upwardly .sufliciently to miss the shoulder 17 but will allow .it to flow smoothly over the face, 14:. The abruptness of the shoulder, 17, causes the water to bethrown upwardly.

Some changes may be made in the construction and arrangement of the parts of my invention without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claim any modified forms of structure or use of mechanical equivalents which may be reasonably included within their scope.

I claim as my invention:

Ina fish lure, a body of rectangular cross section throughout its length, said body having a flat under surface, a head formed integral with said body and of rectangular cross section, said head having a forward face inclined upwardly and a little rearwardly from the perpendicular to the under surface of the body, said head having an upper surface substantially parallel to the under surface of the body, and having an intermediate curved surface connecting said upper surface and the forward face, the body being provided with a. back surface projecting above the head and joined to the upper surface thereof by means ofa shoulder, said back surface being curved rearwardly and downwardly 'to substantially reduce the vertical thickness of the rear portion of the body, and a line tie secured in the'head in the intermediate curved surface thereof.

Signed at Sioux City,-in the county of Voodbury and State of Iowa, this 23rd day of May, 1925.

PORTER D. GIBSON. 

